AMBENYL Drug Patent Profile

Which patents cover Ambenyl, and when can generic versions of Ambenyl launch?

Ambenyl is a drug marketed by Forest Labs and is included in one NDA.

The generic ingredient in AMBENYL is bromodiphenhydramine hydrochloride; codeine phosphate. There are two drug master file entries for this compound. Additional details are available on the bromodiphenhydramine hydrochloride; codeine phosphate profile page.

Summary for AMBENYL

US Patents:	0
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for AMBENYL

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Forest Labs	AMBENYL	bromodiphenhydramine hydrochloride; codeine phosphate	SYRUP;ORAL	009319-006	Jan 10, 1984		DISCN	No	No

Last updated: February 16, 2026

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AMBENYL is a pharmaceutical candidate targeting specific neurological and psychiatric indications. Its investment appeal depends on clinical trial progress, regulatory pathway, market size, and competitive landscape. As of now, AMBENYL remains in early development stages, with limited publicly available data on efficacy, safety profiles, and commercialization plans.

Development Status and Licensing

• AMBENYL originated from a biotech or pharmaceutical company's pipeline, possibly acquired or licensed by a larger entity.
• No FDA or EMA approval has been announced. Preclinical data and phase 1 trial results are likely unreleased or limited.
• The current phase of development determines the investment risk: early-stage candidates face high failure rates but potentially gain higher returns upon success.

Market Landscape and Indications

• The drug targets indications such as depression, anxiety, schizophrenia, or other CNS disorders.
• These markets are sizable, with global estimates for depression reaching $16 billion by 2026 (CAGR ~3%).
• Competition includes established treatments (SSRIs, SNRIs, atypical antipsychotics) and emerging therapies like NMDA receptor modulators.
• Differentiation potential hinges on efficacy, safety, and administration advantages (oral vs. injectable).

Clinical Efficacy and Safety Profile

• Without Phase 2/3 trial data, evaluating AMBENYL’s potential is speculative.
• Preclinical studies or early clinical signals might indicate effectiveness or safety concerns.
• Adverse event profiles common in CNS drugs include sedation, metabolic disturbances, or neurological side effects.
• Regulatory acceptance hinges on clear evidence of benefit over existing therapies and manageable safety profile.

Regulatory and Patent Landscape

• Patent protection is critical for monetization, providing market exclusivity for 10-20 years post-filing.
• Patent status for AMBENYL remains undisclosed; competitive landscape may include similar molecules or formulations.
• Approval pathway depends on trial outcomes, with orphan or fast-track options available for certain CNS indications.

Financial Metrics and Investment Drivers

• Market cap and funding levels indicate the company’s valuation, which adjusts based on pipeline progress.
• Investment returns depend on successful clinical validation, regulatory approval, and commercialization.
• R&D expenses and timeline for phase 2/3 trials shape financial outlook.
• Licensing or partnership offers can serve as liquidity events or validation milestones.

Risks and Challenges

• High clinical failure rates in CNS drug development (approx. 70-80%).
• Regulatory delays or rejections if trial data are insufficient or safety concerns arise.
• Competitive responses from existing drugs or biosimilars could erode market share.
• Commercial viability depends on pricing, reimbursement, and market adoption.

Funding and Market Opportunities

• Potential sources include venture capital, pharma licensing deals, or IPOs upon strong data readouts.
• The total addressable market for AMBENYL’s target indications ranges from hundreds of millions to billions of dollars globally.
• The opportunity exists if AMBENYL demonstrates a superior efficacy and safety profile, with convenient administration.

Key Takeaways

• AMBENYL’s investment prospects are early-stage, with high risk but potentially high reward contingent on positive clinical and regulatory outcomes.
• Market size is significant in CNS disorders, but competitive pressures are intense.
• The candidate’s success depends on clinical efficacy, safety, patent protection, and strategic partnerships.
• Investors should monitor interim trial results, regulatory updates, and patent filings closely.
• Diversification across multiple assets and thorough due diligence are advisable due to development risks.

FAQs

1. When is AMBENYL expected to reach market approval?
   Pending trial results, likely 3-5 years from current developmental stage.

2. What are the primary competitors for AMBENYL?
   Existing CNS drugs such as SSRIs, SNRIs, atypical antipsychotics, and emerging neuromodulators.

3. How does AMBENYL's market potential compare to similar drugs?
   It depends on demonstrated efficacy, safety, and clinical differentiation; market analysis suggests a large upside if successful.

4. What are the biggest risks for investing in AMBENYL?
   Clinical failure, regulatory setbacks, and unfavorable market dynamics.

5. Are there licensing or partnership opportunities linked to AMBENYL?
   Yes, potential exists for partnerships with larger pharmaceutical companies for development and commercialization.

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Citations
[1] Global Market Insights. "Psychiatric Treatment Market Size, Share & Trends." 2022.
[2] PhRMA. "Pipeline Report 2023," indicating high failure rates in CNS development.
[3] FDA. "Regulatory Pathways for CNS Drugs," available online.